Determining characteristics of HF communications links using SuperDARN

J. M. Hughes, W. A. Bristow, R. A. Greenwald, R. J. Barnes

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Space weather effects can strongly influence high-frequency (HF) communications by changing the ionospheric environment through which the radio waves propagate. Since many systems utilize HF communications, the ability to make real-time assessments of propagation conditions is an important part of space weather monitoring systems. In this paper, we present new techniques for measuring high-latitude HF communications link parameters using data from SuperDARN radars. These techniques use ground-scatter returns to define the variation in skip distance with frequency. From these data, the maximum usable frequency (MUF) as a function of range is determined and ionospheric critical frequencies are estimated. These calculations are made in near-real-time and the results are made available on the World Wide Web. F-region critical frequencies calculated using this method show good agreement with ionosonde data.

Original languageEnglish (US)
Pages (from-to)1023-1030
Number of pages8
JournalAnnales Geophysicae
Issue number7
StatePublished - 2002

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Geology
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science


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